Durable mesh upper with a full eVent waterproof bootie construction; ZipFoam midsole for more cushioning and resilience; External TPU heel counter for comfort and security; Vibram Megagrip outsole for unparalleled grip and traction; Full length ESS rock plate offers protection and stability; Drop: 5mm; Rubber Outsole: 6mm; Midsole: 22mm EVA (Heel) / 17mm (Ball); Total Stack Height: 33 x 28 mm; Weight: 15.9oz / 451g (M9)